Slider for slide fasteners



P 2, 1952 Y J. BECKERMAN 2,608,734

SLIDER FOR SLIDE FASTENERS Filed Feb. 27, 1950 INVENTOR. JOSEPH BECKER/WAN.

ATTORNEY Patented Sept. 2, 1952 2,s0s,734 SLIDER FOR SLIDE FASTENERS Joseph Beclierinam'KewGardens, N. Y. I Application February 27, 1950, Serial No. 146.535 ,f

- 2 Claims. (Cl. 24-20515) This invention relates to a pivotally constructed slider for slide fasteners.

The'fprincipal object of the present invention is'th'e provision of a slider of the character described which is" comprised ofpivotally related "parts which may beseparated into open position or brought together to closed position as and when desired, irrespective of its location on the slide fastener'stringers. This feature is extremely ;important for :the purpose of freeing jammed sliders without recourse to special tools and special skills. Sliders which may be disassembled for this very purposehavev heretofore'been devised" and patented.- But in mostcases, it has been found necessary to completely disassemble the slider in order to accomplish-this purpose.

In-t-he present invention, however, all that need' jbedone is to swing the two pivotally connected in 'order to free the two-pivot ally connected elements for relative angular movement to open or' inoperativeposition.

ln-one-form-of th" invention, the locking sleeve comprises-f a tubular member having internal screw; threads which engage external screw threads on the pivotally connected elementsi- 'In'a'n'oth'er form'of this; invention; neither the sleeve nor the pivotally connected elements are provided with screwthreadsd; Instead, the sleeve is slotted to provide clearance for one of said pivotally connected elements when the slot and said pivotally connected element are in registration' with each other. When they are out of registration witheachother, the -two' plvotally corinected elements are locked in closed position." In neither of these two embodiments of this'invention is it necessary to completely remove the locking sleeve from the two pivotally associated elements and in neither case is it necessary to completely separate the two pivotally associated elements fromeach other;

Itisaccordingly a correlary' object of this invention to provide a'slider of the character described having-two pivotally connected elements "whichemay be moved into open or closed position ;relative. to. eachother and which 7 will always be I in proper alignment with each other. Thisfeature naturally flows from the fact that the pivotally connected elements need not be completely disassociated from each other at anytime. Similarly, the locking sleeve always remains connected to said pivotally associated elements, or at least one of them, irrespective of the positions of said pivotally associated elements relative to each other. 1

It is a further object to provide a slider of the character described, which is made ofbu t three simple main parts which may be easily assembled, and when so assembled are permanently united to prevent disassembly.

Preferred forms of this invention are shown by way of illustration in the accompanying drawing, in which: 1

Fig. 1 is a perspective view of a slider'made in accordance withthe first form of'thisinvention, showing the two'pivotally' connected elements in open position. i

Fig. 2 is anexploded perspective view'thereof showing the twopivotally connected members and the locking member in completelydisassembled or unassembled positions;thisgshowing being solely to illustratethe -several component parts 'of the device and notto illustrate oneof their possible'positions. I r

Fig. *3 is an enlarged longitudihal -sectl'on through said slider, showing the two pivotally connected elements in open or inoperative-pesition.- I V v 1' Fig. dis a similar view showin'g the two pivotally connected elements in closed or operative -Dosition. i

. Fig.5 is a top view ofa 'slide'r mjade iii-accordancewith a-second form of -this'in ention.

Fig.6 isaside view thereof.

Fig. 7 is another top View, showing-the locking member in unlocking position. r Y

Fig. 8. is aview similar to that of Fig; 6 showing one of -the pivotally connected elements in open position relative to theother pivotally connected element. I

Fig.9 is a longitudinal section-through said slider.

' r F Referring now to the first-"form of thisinvention, and to Figs. 1' to 4 inclusive, it will 'be seen that slider Zo -made in accordance with said first form 'of" the invention, comprises the following elemehts: a lower jaw 2|, ahnpperjaw M pivotally connected to said lower law. a pull tab 23 pivotally mounted on said upper jaw- 22,' and a locking sleeve 24'which isadaptedto engage both pivotally connected jaws. l The pull'tab is. i of course, 'conventional;-as are the forward parts 'asEig. 2 clearlyrshows;

runs its full length and a transversely extend-- ing slot 34 which is formed diametricallythereoi,

and in its very back end. The two slots '33 and 34 communicate with each other .andithey are disposed normally to each other.

Upper pivotally connected member 22 is also provided with a rearward extension piece36, and it will be noted that this extension piece is slight- Iy-narrower than the width of slot 33 so that .said. slot may very conveniently accommodate said. -.extension piece 36. Extension piece 36 is ,.:provided with .a cross pin 31,, the extending .ends

of whichbecome trunnions which are adapted ytobejournalledin'transverseslot 34 and there- :'.by to enable the upper. member .22 to pivot relative to the .lower member 2|. Extensionpiece .36 of the upper member may be provided with .ex-

. ternal screw threads 38 and it will be understood .that screw threads are so formed thereon that .they. are continuous with the screw threads 3! of .lower extension .piece 30 when the two members 2i and 22 are in .closed, pivota1ly related positions.

Locking sleeve 24 comprises a cylindrical collar having an inwardly extending annular .flange .Allxformed at its. .iorward end- This annular .flange. is provided with internal screw threads .42 which .are adaptedv .to engage external screw threads 3i and 38 of the two pivotally connected imembers 2| and 22. -(See Fig. 4.) When the locking sleeve 241s in its iorwardmost position on the .two pivotally connected members, said .pivotally connected members are held in closed position. When said locking sleeve is moved to its rearwardmost position .(see Fig. 3) .then upper pivotally connected member 22 will be free :to

=-;piv.ot. away iirom. .the lower, pivotally connected 1-.memher 2| to open position. This feature be- .comes;;.possible by reason of the following ar-t rangement of parts: pin 31 occupies a position iorward of the locking-sleeve when said lock- .member:is inits rearwardmost position, and the back end of extension piece 36 is :rounded the lockingsleeve is moved to its vrearm'ost position on extension piece 30,..it disengages the upper member .22 and frees said member for pivotal movement relative to the lower member .21. Looking sleeve 24 cannot disengage extension piece 30. because the outwardly, extending flange "32 of extension piece 30- engages the inwardly extending flange 40 of thelocki-ng sleeve r andtunctions-as a stop member relative thereto.

It will be understood that this flange is not: donned on the extension piece :until after the .extension pieces .30 and 36 and the sleeve .241have :been assembled. The extension 36 .fits within the longitudinal slot 33 with the trunnions 31 giournalledin the transverse .slot 34 to .properly: -.-'al=ign-iaws 2.1, 22.

. .lt wi1l be noted in Figs. fiend ri'thatza shoulglen-45 is formed between thejmain body-of upper .member 22 :and its-extension piece36. Whe'n ;-.;1ocl;ing1member. 24 isin locking position :on the In other words, when;

4 two pivotally connected members 2| and 22. it abuts shoulder 45 as shown in Fig. 4. It will be understood from this arrangement, that screw threads 38 may, if desired, be omitted from extension piece 36 since the abutment of the looking member against shoulder 45 of upper member 22 will serve to position said upper member relative to the lower member 2|. Stated differently, as the construction of the two pivotally connected members is iillustratedzin the drawing, screw "threads 38 and'3'l in engagement with screw threads 42 serve to position the upper and 1 lower pivotally connected members relative to each, other. .Should screw threads 38 be dispensed with, it will be the abutment of the lock- .ingmem'bers against shoulder 45 that will serve to accurately align the upper and lower members of the slider.

Turning. now to the second form of this invention as shown in Figs. 5 to 9 inclusive, it willthere. beseen that slider 60, made .in accordance with said second .form .of the .inven- .tion, .has noscrewthreads at all. Its upper .iaw 6.! is provided with. an .extensionpiece ilwhich is pivotallyconnected to extension piece. 53 of lower jaw 54 .in the same manner as it was in the first .form .of the invention. Lockingmem- .ber .65 .is rotatably mounted on the .two extension piecesfiz and-B3. .It hasa cut-outfit; formed therein which. is registrable with extension .piece 82 of the upper jaw. When looking member .65 is turned from its looking position .of .Fig. fi-to its unlocking position of .Rig. Brent-out will .register with extension piece .62 and enablesaid extension piece, as well as jaw 51 with which it is integral, to ,pivot to open positionas shown .in Fig.8. Whencut-outBB .is out of registration with said extension piece .62, the .slider islocked in closed position. vFig. .9 .shows the details of construction of..slider 30. It will there beseen that trunnions 10 .are. connected to extension piece .62 of ;.the upper Jaw, and .thatthese tr -unnions rare journalled slot .11. iormed in extension piece 63 of .the lower .jaw. I

It will-alsobeseen insaid Fig-9 that looking member ;B5-is -pr.ovided with an inwardly turned flange .13 which projects into .an annular groove 14 formed along .the line .of juncture between extension piece -63.;and jaw 64 with which it-is integral. Itis this flange singer-cove construction which. prevents longitudinal movement of the locking member relative to said; jaws.

.It will be .understood that the foregoing is illustrative of the preferred .i'orms oi. thisinvention .and that other forms as well as flcations of these forms may readilyzbe .had within the broad .scopeandwspirit of the invention as set forth in the-.appendedclaims.

4 Having thusdescribed .my invention, what I claim as new .and desire to secure by Patent, is; I r f 1. A .slider for slide fasteners, comprising-h pair of top and bottom wallmem-bers, rearward extension pieces on. said wall members, the-bot- .tom wall member extension havinga transverse bearing .slot .in- .its free end, and :having axiom- .gitudinally disposed radial slot receptive of substantially the whole body of the bottom member extension, .2. pair of -trunnions .carried iby the extension piece of 2-the .top wall memberzand rotatably receivable in said \bearing slottocon- .stitutea pivotal connection between :saidwext'ension pieces, and a locking sleeve longitudinally movably embracing :said extension pieces;zsaid extension pieces being provided with aligned: ex-

. 75 .ternal screw threads andsaid locking sleevebe'ing provided with internal screw threads engageable therewith, a rotation of said locking sleeve in one direction on said screw-threaded extension pieces causing the locking sleeve to move forwardly of said pivotal connection to restrain the extension pieces against relative pivotal movement, and rotation 01 said locking member in the opposite direction causing said locking sleeve to move rearwardly of said pivotal connection and into unlocking position to enable said extension pieces to engage in relative pivotal movement. 5

2. A slider in accordance with claim 1, wherein the locking sleeve comprises a cylindrical member having a radially inwardly extending flange formed at its forward end, the internal screw threads of said locking sleeve being provided on said inwardly turned flange, and wherein one of the extension pieces is provided with a radially outwardly extending flange on its rearward end which is engageable with the inwardly turned flange of the locking sleeve when said locking sleeve is moved to its rearward position, thereby serving as a stop therefor and 6 preventing disengagement of said locking sleeve from said last-mentioned extension piece,

JOSEPH BECKERMAN.

REFERENCES CITED The following references are of recoijd in the file of this patent: f

UNITED STATES PATENTS Number Name Date 28,842 Foote June 26, 1860 38,532 Draper May 12 1863 7 790,105 Cavanaugh May 16,1905 854,293 Johnson May 21," 1907 1,293,543 Plank Feb.'4 1919 1,314,114 Anderson Aug. 26, 1919 2,111,004 Pruzan Mar.15,1938 2,227,766 Sico et a1. Jan. -7',' 1941 2,366,797 Legat Jan; '9, 1945 FOREIGN PATENTS Number Country Date 17,566 Great Britain of 1908 52,124 Germany of 1890 

